Kim'sstatement was in response to Trump's address at the UN General Assembly on Tuesday in which he dubbed the North Korean leader as "Rocket Man", threatened to "totally destroy" the country, and admonished the country for its continued provocations.

"Trumpinsulted me and my country in front of the eyes of the world and made the most ferocious declaration of a war in history", Kim said.

"The speech made by the USA president. on the United Nations arena in the prevailing serious circumstance, in which the situation on the Korean Peninsula has been rendered tense as never before and is inching closer to a touch-and-go state, is arousing worldwide concern", Kim's statement said.

In Thursday's sanctions announcement, Trump stopped short of going after Pyongyang's biggest trading partner, China, praising as "tremendous" a move by its central bank ordering Chinese banks to stop doing business with North Korea.

It is unknown if North Korea possesses the technology to back up their threats, but recent missile and nuclear tests suggest they are moving closer to being able to successfully place an atomic weapon onboard an intercontinental ballistic missile (ICBM).

Hours later, North Korea's foreign minister reportedly said his country may test a hydrogen bomb in the Pacific Ocean to fulfill Kim's vow to take the "highest-level" action against the United States. He described the president as "a rogue and a gangster fond of playing with fire".

The observances come as the global community attempts to put more pressure on North Korea to end its nuclear weapons program.

Flowers from Kim Jong Un will be placed on a statue of Kim Jong Sook at her birthplace in North Hamgyong province, said another source.

Washington followed on Thursday by announcing tougher sanctions on North Korea.

He worked in North Korea's embassies in Zimbabwe, Sweden and the U.K.as well as serving as Pyongyang's top envoy to the stalled six-nation disarmament talks, even meeting President Bill Clinton as part of a North Korean delegation's historic visit to the U.S.in 2000.

On Friday, Trump apparently responded in a tweet, saying Kim "will be tested like never before!"

North Korean state media often employ the word Juche, the North Korean state ideology of self-reliance, when referring to the country's nuclear tests.

Such a test with a live warhead would tellNorth Korea's engineers whether their bomb design can survive the rigors of flight and re-entry into the Earth's atmosphere, says Michael Elleman, a missile defense expert at the International Institute for Strategic Studies.

Kim's statement was a unique escalation itself, marking the first time Kim or his predecessors had addressed the world directly, according to Seoul's Unification Ministry, which is responsible for North-South relations.

Russian Federation also urged restraint, with Foreign Minister Sergei Lavrov describing the conversation between the two leaders as a "kindergarten fight between children".

Trump said his order gave the U.S. Treasury discretion to sanction foreign banks that conduct transactions tied to deals with North Korea.

Trump, of course, is the president of the United States, a businessman and a reality television star.